Perfect Add-Ons
Fisher Pulse Induction Pinpointer
$149.99 USD
103693000C | Fisher Carry Bag
$38.00 USD
$45.00 USD
Metal Sand Scoop
$28.00 USD
$39.95 USD
Digger Knife
$29.99 USD
$39.95 USD
TROWEL-W | Plastic Trowel
$9.99 USD
$14.95 USD
TROWEL-2 | Stainless Steel Trowel
$9.99 USD
$17.99 USD
Rechargeable 9V with Charger
$24.99 USD
$29.99 USD
Frequently Asked Questions
What is the maximum depth rating for the CZ-21 QuickSilver?
The CZ-21 QuickSilver is submersible up to a depth of 250 feet, making it suitable for both shallow and deep underwater detecting.
How many operating modes does the CZ-21 have?
The CZ-21 QuickSilver has three operating modes: Target-ID Mode, Auto-Tune All-Metal Mode, and Pinpoint Mode.
Can I use the CZ-21 on saltwater beaches?
Yes, the CZ-21 is designed to handle both saltwater and freshwater environments, with built-in saltwater compensation to minimize false signals.
What is the operating frequency of the CZ-21?
The CZ-21 operates on a dual-frequency system: 5 kHz and 15 kHz, which enhances detection accuracy and depth.
Can the control housing be hip-mounted for comfort?
Yes, the control housing of the CZ-21 can be removed from the handle and hip-mounted using the included belt clip for increased comfort during extended use.
What is the recommended sensitivity setting for saltwater use?
For saltwater environments, the recommended sensitivity setting is “3” to minimize false signals and ensure stable operation.
Replacement Parts
Housing Mounting Bracket
$14.05 USD
Fisher 1280X & CZ21 Battery Door Gasket
$19.95 USD
Brass Nickel Screw
$12.95 USD
Battery Holder Assembly
$38.95 USD
CZHANDLE
$24.95 USD
19" Lower Stem w/ Clip
$18.99 USD
26" Lower Stem w/ Clip
$18.99 USD
Fisher Replacement Arm Rest
$19.99 USD
2021112000| Velcro Armstrap
$11.00 USD
$11.95 USD
Tube Stabilizer
$6.95 USD
CLIP
$6.95 USD
Chest Harness
$34.95 USD
Depth Detection Factors
The detection depth of a metal detector is primarily influenced by the size of the search coil. Typically, a coil will detect coin-sized objects at a depth roughly equivalent to the coil's diameter. For example, a 4" coil is likely to detect coin-sized objects up to 4" deep, whereas an 8" coil may detect similar objects at a depth of up to 8". However, detection depth can be significantly affected by several variables, including electromagnetic interference (EMI), detector sensitivity settings, and soil mineralization.
Soil conditions play a crucial role in depth detection. Here are three common soil types that can impact performance:
Highly Mineralized Soil: Rich in iron and other conductive minerals, this type of soil can cause false signals and reduce the detector's depth capability. The detector may struggle to differentiate between the soil and metal objects, leading to decreased accuracy.
Wet or Saline Soil: Soils with high moisture content or salinity, such as those found near coastal areas, can enhance conductivity, causing the detector to register numerous false signals. This interference may mask deeper targets and limit the effective detection depth.
Compact Clay Soil: Dense and compacted clay can create a challenging environment for metal detection. Its dense nature can impede electromagnetic signals, reducing the detector's sensitivity to deeper targets. Additionally, the moisture-retaining properties of clay may cause additional signal distortion.
Understanding these factors and adjusting the detector's settings accordingly can help optimize detection depth and accuracy across various conditions.
